Fluid-pressure turbine.



No. 791.860. y PATENTED JUNE 6,1905. H. L. BARTON.

FLUID PRESSURE TURBINE. APPLICATION FILED MAY 1g, 1904.

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- wmussss:v 1 |NVENT0R @LVLLHM L v. l v K l ATTO'NLY No. 791,866. u

UNITED STATES Patentedune 1905.

PATENT OFFICE.

HENRY L. BARTON, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THEWESTINGHOUSE MACHINE COMPANY, A CORPORATION OF PENNSYLVANIA.

FLUID-PRESSURE TURBINE.

SPECIFICATION forming part of Letters Patent No. 791,860, dated J' une6, 1905.

` Application filed May 18, 1904. Serial No. 208,585.

vTo all whom it may concern:

' zen of the United States, and a resident of Pittsburg, in the countyof Allegheny and State of Pennsylvania, haveinventeda new and usefulImprovement in Fluid-Pressure Turbines, of which the following is aspecification.

My invention relates to Huid-pressure turbines, and particularly tomeans for securing the vanes or blades of such engines in position.

The object of my invention is to provide a means for securelyattaching'blades or vanes to the stationary and to the rotatable memberof a Huid-pressure turbine or to either of the said members which shallpermit of ready insertion and removal of said parts.

With these ends in view I have devised the means shown in theaccompanying drawings, in which- Figure 1 is an end elevation of aportion of a drum and a plurality of vanes or blades mounted thereon inaccordance with my invention. Fig. 2 is a plan view of substantiallywhat is shown in Fig. 1. Fig. 3 is a perspective view of a portion of adrum and a single vane or blade and a spacing-block anchored in positionby my locking means. Fig. 4 is' a perspective view of one of the bladesor vanes, and Fig.v5 is a similar view of one of the spacing-blocks.Fig. 6 is a view,partially in side elevation and partially in section,of a turbine both the rotating and the stationary members of which haveblades orrvanes that are fastened in position in accordance with myinvention: p

Fluid-pressure turbines of the Parsons type are provided with a numberof annular sets of blades or vanes upon each of the turbine members, andas these blades or vanes are usually constructed as separate devices itis desirable to embody some means of anchoring them in position whichwill facilitate insertion and removal and at the same time insure arigid connection between them and the supporting structure. Inasmuch asthe blades or vanes are spaced apart in order to provide passages of thedesired form and dimensions,

it is usual to provide these devices with laterally-projecting bases orto provide separate spacing-blocks. Either of these eXpedients may beutilized in my invention; but in order to simplify and cheapenconstruction I generally prefer to make the blades or vanes of uniformcross-section throughout and to employ separate spacing-blocks. This isthe construction which I have illustrated in the drawings.

In Figs. 1, 2, and 3 I have shown a portion of the drum 1 of the turbineas provided with a circumferential groove 2, that is rectangular incross-section and th'e width of which is equal to the width of theblades 3 and spacing-blocks I that are to be employed. It will `be ofcourse understood, as indicated'in Fig.

6, that the casing or cylinder 5 of the turbine 6, as well as the drum1, is provided with a plurality of annular grooves 2, the number anddimensions of which will depend upon the dimensions and type of turbine.

As indicated -in the drawings, the inner side wall of the groove 2isprovided With an annular recess 7, that is semicircular in crosssection,and the corresponding sides or edges of the blades 3 and spacing-blocksA are respectively provided with recesses 8 and 9 of similar form incross-section. A wire 1() of the proper size to t the recess 7 is placedtherein, and then the blades and spacingblocks are alternately insertedand turned into operative position in the groove 2, such insertion beingreadily effected, since the width of the groove is materially greaterthan the thickness of either the blades or the spacing-blocks.

The specific means shown for locking the blades and spacing-blocks inposition will probably be found as inexpensive and serviceable as anythat could be employed; but it would be of course feasible to have theannular portion that litsinto the notches 8 and 9 formed as an integralpart of the casingcylinder or the drum, as the case 'may be, instead ofbeing inserted as a separate wire. It

will also be understood that this annular projection, whether formed asa separate device or as an integral part of the drum or cylinder, may beof dierent shape in cross-section from that illustrated. Whatever may bethe specic form of this annular projection and Whether it be integralwith the drum or cylinder or Whether it be a separate locking deviceVitrWill serve: to securely anchor the blades in position. Any7 desiredaddition to or modification of the locking device may be made in orderto facilitate the insertion of the nal vane or blade and spacing-blockof a set. One means that may be utilized for this purpose is shovvn inthe Hodgkinson patent, No. 672,838, of April 22, 1901; but it is obviousthat this is only oneof several devices that might be used.

I claim as my invention- 1. :Ina.turbine,. a blade-supporting.memberprovided with an annular groove having an annular recess in one Wallthereof, blades or vanesarranged Within said groovek and havingnotchesthat register With said recess, and an anchoring strip or Wirelying' partially Within said recess and said notches.

2. lnaturbine, a blade-supporting member provided With a parallel Walledannular groove, blades or vanes arranged in said groove, spacing-blocksarranged between the adjacent blades or vanes, and a removable anchoringstrip or Wire partially 'located in one Wall of said groove andpartially Within thev blades or vanes andv spacing-blocks.

3. In ay fluid-pressure turbine, a blade-sup veneto porting memberhaving annular grooves and annular recesses at corresponding sides,blades or vanes having the same Width as said grooves and havingnotches, and locking-wires that lit into said recesses and said notches.

1. In a Huid-pressure turbine, a blade-supporting member having annulargrooves and annular recesses opening into the sides of said grooves,blades and spacing-blocks having the same Width as said grooves andhaving side notches, and locking-Wires that lit into said notchesandsaid annular recesses.

5. In a fluid-pressure turbine, a blade-supporting member having annulargrooves, blades or vanes and spacing-blocks of the same Width as saidgrooves and fitted therein, and locking-rings located partially innotches in the blades and spacing-blocks and partially in annularrecesses at the sides ot' the grooves.

6. A Huid-pressure turbine having annular grooves in its bladesupporting members, blades and spacingblocks fitted into said grooves,and locking-rings located partially in notches in said blades andspacing-blocks and partially in the supporting members at the sides ofthe grooves.

In testimony whereof I have hereunto subscribed my name this 5th day ofMay, 1904.

H ENRY L. BARTON.

Witnesses:

HARRY B. SMITH, BIRNEY HINES.

